Since the original inquiry didn't specifically mention files, I'm wondering if the expectation that only changed data within a file would be backed up.

The incremental backup will backup all files (in their entirety) that have some changed data.

The backup process is at the file level unless using a plugin of some sort for something like a database, etc.

I hope that helps.

Thanks,

Andrew Feldmann

On 1/3/22 10:01, Brock Palen wrote:
Shouldn’t happen,

What’s the backup host and can you include the job configuration here?
Mostly it works out of the box and uses filesystem metadata to determine if a 
file needs to backed up again. This can be modified but I don’t recommend it.

It’s possible if the filesystem being backed up has some metadata features like 
mtime/atime disabled?  Or the time on the machines is out of whack (not sure 
how much that maters)

I have seen some odd behavior backing up dropbox/gdrive etc over rclone fuse 
but that’s expected those are not ‘real’ filesystems.


Brock Palen
[email protected]
www.mlds-networks.com
Websites, Linux, Hosting, Joomla, Consulting



On Jan 3, 2022, at 1:00 AM, 신정우 <[email protected]> wrote:

hello,

We are conducting backup through bareos open source

When an incremental task is executed, the actual modified data is only a few, 
but the incremental backup performs a backup of the entire data.

I want to know what criteria the modified data is recognized when executing 
incremental backups to solve this problem.

please reply!

thank you


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